1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
polet [3.4K]
3 years ago
15

Solve the following system:

Mathematics
1 answer:
prisoha [69]3 years ago
3 0

Answer:

Read explanation

Step-by-step explanation:

Use elimination

Add them all up

y = 1 ( everything else cancels )

-2x + 2(1) + z = 14

3x - 2(1) + z = -5

-x +(1) - 2z = -8

simplify

-2x + z = 12

3x + z = -3

-x -2z = -9

U can't use elimation because it would turn into 0 = 0

change last equation

x + 2z = 9

x = -2z + 9

plug that in

-2(-2z+9) + z = 12

3(-2z+9) + z = -3

-(-2z+9) - 2z = -9

4z - 18 = 12

-6z + 27 + z =-3

2z - 9 - 2z = -9

simplify

4z = 30

-5z = -30

0 = 0

z = 6

y = 1

x = -3

You might be interested in
I need help pls help me
faust18 [17]

Answer:

the answer for a is t-10p= x

Step-by-step explanation:

t= tomatoes

p= pounds

x= leftover amount of tomatoes.

4 0
2 years ago
Read 2 more answers
Will mark brainliest, please answer:)
BartSMP [9]

Answer:

√135

Step-by-step explanation:

3^2+b^2=12^2

9+b^2=144

9-9+b^2=144-9

b^2=135

√135=b

3 0
3 years ago
a veterinary researcher takes an srs of 60 horses presenting with colic whose average age is 12 years. the average age of all ho
Ghella [55]

Answer:

The value 10 years is the population mean

Step-by-step explanation:

A sample consists of some observations drawn from the population, so a part or a subset of the population which in this case is the number of horses with colic.

A sample mean is the mean of the statistical samples while a population mean is the mean of the total population.

Thus, in this case, the sample mean is the mean age of the horses with colic while the population mean age is the mean age of all the horses found at the clinic.

Therefore, the mean age of 10 of the horses seen at the clinic would be the population mean.

4 0
3 years ago
In the numerical sentence below, A = 8, D = 1/2 , and F = 1/4. What are the values B, C, and E if the sentence below is equivale
a_sh-v [17]
B=3; C=16; and E=4096.

Using the information we have gives us

8^B \times C^{\frac{1}{2}} = E^{\frac{1}{4}}

We know that:
8^B = 2;
\\
\\C^{\frac{1}{2}}=4;
\\
\\E^{\frac{1}{4}}=8

We know that 2³ = 8, so B = 3.

To "undo" a square root, we square the number; 4²=16, so C = 16.

To "undo" a fourth root, we raise the answer to the fourth power; 8⁴ = 4096, so E = 4096.
3 0
2 years ago
Read 2 more answers
Find the sum of −(23)x−8 and 35x−4 .
Anna007 [38]

Step-by-step explanation:

֊23x-8+35x-4=12x-12

hshsusbsusbwhw

7 0
3 years ago
Read 2 more answers
Other questions:
  • Is 419108 divisible by 4?
    10·2 answers
  • Identify the percent increase in total sales and the percent increase in sales of trench coats. Then find which percent of
    10·2 answers
  • Blue cassettes hold 45 minutes of music. Green cassettes hold 55 minutes of music. If Niko has 16 cassettes containing 830 minut
    15·2 answers
  • Jeff earns money mowing lawns. His earnings and hours worked represent a direct variation. He worked for 5 hours and earned $37.
    14·1 answer
  • Simple interest? of 1500-P R-2.5% and t-5 yrs
    13·1 answer
  • Abargain clothing store is selling 5 shirts for $20.
    5·1 answer
  • A. Renard let’s t= the number of taffy bags and c= the number of Carmel bags. Help him write two equations to represent the info
    13·1 answer
  • Please help me find the variable
    8·1 answer
  • Is this a function ? explain your reasoning. <br><br> can someone help me pleasee !
    7·1 answer
  • each table in the library can seat up to 7 people. There are enough tables for 175 in all. How many tables are in the library
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!